1997 Ford F-150 Q&A

1997 Ford F-150 Question: My 1997 F-150 4.2 shows codes P1537 & 1538. IMRC valve stuck open. How to change

Where is this and how hard is it to change? -
Answer 1
its a vac diapharm located behind the eng blk against firewall. the problem can be vac related or vac resivoir or rod clips,diapharms themselves or siganl -